Project Overview

The Johan Castberg FPSO project is a major oil development in the Barents Sea, Norway, featuring a Floating Production, Storage & Offloading (FPSO) unit designed for harsh Arctic conditions. Operated by Equinor, the field achieved its first oil production in March 2025 and is expected to produce for 30 years. 

It has a total production capacity of 220,000 barrels of oil per day and recoverable volumes of approximately 450-650 million barrels. The FPSO Vessel is 313 meters in length, 55 meters in width, and 120 meters in height. It has a storage capacity of 1.1 million barrels of oil. 

Johan Castberg FPSO Location

Johan Castberg is located approximately 100 kilometers north of the Snohvit field in the Barents Sea, around 240 km from Melkoya, and 150 km from Goliat. The water depths are approximately 360-390 meters, and Skrugard and Havis are 7 km apart. 

Project Background

Equinor submitted the Plan for Development & Operation (PDO) in December 2017, and it received approval from the Norwegian Government in June 2018. 

The field develops from the three oil discoveries, namely, Skrugard, Havis, and Drivis, all located in production licence 532. 

Skrugard was discovered in April 2011, Havis in January 2012, and Drivis in May 2014. The fields were detected after the 20th licensing round on the Norwegian Continental Shelf was announced in April 2009 by the Ministry of Petroleum and Energy.

Oil recoverable from Skrugard and Havis is estimated to be 450–650 mbbl. The Johan Castberg field comprises of 30 wells distributed across 10 subsea templates and two satellite structures, along with umbilicals, subsea trees, wellheads, and flowlines tied back to the FPSO Vessel. As of June 2025, 17 wells were completed, with drilling activities expected to continue until late 2026. 

Johan Castberg FPSO Ownership Details

The Johan Castberg FPSO is jointly owned by Equinor (46.3% operator), Var Energi (30%), and Petoro (23.7%). 

Project Timeline

Johan Castberg FPSO First Oil

The Johan Castberg FPSO successfully produced its first oil on 31 March 2025, marking the start of the new era in the Barents Sea. It reached the plateau production of 220,000 barrels of oil per day on 17 June 2025. 

According to Equinor's announcement, a total of 30 wells are to be installed, of which 17 have been completed as planned. The remaining 13 wells are expected to be drilled by the end of 2026.

Out of 30 wells, 18 will be horizontal production wells, and 12 will be injection wells. These are to be distributed across 10 subsea templates and two satellite structures in water depths of 360 to 390 meters.

It has a total storage capacity of 1.1 million barrels and regularly dumps hydrocarbons to

tankers. The vessel is also contributing 66,000 B/D net to the company at plateau. 

Johan Castberg Officially Opened

The Johan Castberg field was officially opened on 8 August 2025 by the Minister of Energy, Terje Aasland. The Barents Sea has become the most important for Norway as a long-term energy exporter. 

Over its 30-year lifetime, the project will create multiple job opportunities in the supply industry. Every three or four days, cargoes leave the Castberg field. Each cargo is worth approximately NOK 500 million, depending on the oil price. 

Johan Castberg FPSO Project Cost

Initially, in 2017, when the Plan for Development & Operation (POD) was submitted, the estimated cost was NOK 57 billion (USD 5.3 billion). 

It was revised to NOK 80 billion (USD 7.4 billion) in 2023 due to project delays. 

The latest 2024 update raised it to NOK 86 billion (USD 8.16 billion), with first oil achieved in March 2025.

Design & Engineering Details

Johan Castberg FPSO Contractors

Conclusion

The Johan Castberg FPSO project is a major milestone for the development of Norway’s northernmost oil province in the Barents Sea. With the first oil produced in March 2025, the vessel boosted its production capacity to 220,000 barrels of oil per day by June 2025, in less than 3 months. As a result, it highlights the field's remarkable efficiency and resilience, despite initial weather-related delays. 

Equinor, along with Vår Energi and Petoro, drilled a total of 30 wells across 10 templates and two satellites, complemented by a state-of-the-art FPSO with 1.1 million barrels of storage capacity.

The Johan Castberg field positioned Norway as a reliable, low-emission energy supplier, generating ripple effects through thousands of jobs, supply chain opportunities, and technological advancements in harsh Arctic conditions.

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